Principal fragmentations of mono-, di-, tri-, and tetraazaindolizines under electron impact was written by Daunis, Jacques;Lopez, Helene;Maury, Georges. And the article was included in Organic Mass Spectrometry in 1977.Application In Synthesis of 6-Nitroimidazo[1,2-a]pyridine This article mentions the following:
The principal fragmentations of 1H azaindolizines containing the imidazo[1,2-a]pyridine, -[1,5-a]pyrimidine and -[1,5-b]-1,2,4-triazine and triazolo[2,3–b]-, -[4,3-b]-, -[3,4-c]- and -[3,2-c]-1,2,4-triazine structures are described. Each structure has an individual fragmentation path except where Dimroth rearrangement to an isomeric product occurs. The degradation scheme was correlated with the number and position of the N atoms. In the experiment, the researchers used many compounds, for example, 6-Nitroimidazo[1,2-a]pyridine (cas: 25045-82-3Application In Synthesis of 6-Nitroimidazo[1,2-a]pyridine).
6-Nitroimidazo[1,2-a]pyridine (cas: 25045-82-3) belongs to imidazole derivatives. Imidazole is a heterocyclic compound with a five-membered planar ring. It is amphoteric and highly polar. Many drugs contain an imidazole ring, such as certain antifungal drugs, the nitroimidazole series of antibiotics, and the sedative midazolam.Application In Synthesis of 6-Nitroimidazo[1,2-a]pyridine
Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem